WO1999008780A1 - Improved mixing and aerating apparatus - Google Patents

Improved mixing and aerating apparatus Download PDF

Info

Publication number
WO1999008780A1
WO1999008780A1 PCT/AU1998/000653 AU9800653W WO9908780A1 WO 1999008780 A1 WO1999008780 A1 WO 1999008780A1 AU 9800653 W AU9800653 W AU 9800653W WO 9908780 A1 WO9908780 A1 WO 9908780A1
Authority
WO
WIPO (PCT)
Prior art keywords
mixing
central disc
central
plates
shaft
Prior art date
Application number
PCT/AU1998/000653
Other languages
English (en)
French (fr)
Inventor
Michael Anthony Lewis
Original Assignee
Tva Technologies Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tva Technologies Pty Ltd filed Critical Tva Technologies Pty Ltd
Priority to NZ503016A priority Critical patent/NZ503016A/en
Priority to US09/486,028 priority patent/US6280078B1/en
Priority to AU87214/98A priority patent/AU726926B2/en
Priority to CA002300909A priority patent/CA2300909C/en
Priority to KR1020007001753A priority patent/KR100566553B1/ko
Priority to EP98938531A priority patent/EP1015102B1/en
Priority to IL13463698A priority patent/IL134636A/xx
Priority to JP2000509512A priority patent/JP2001514957A/ja
Priority to DE69830064T priority patent/DE69830064T2/de
Priority to AT98938531T priority patent/ATE294633T1/de
Publication of WO1999008780A1 publication Critical patent/WO1999008780A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23311—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2335—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the direction of introduction of the gas relative to the stirrer
    • B01F23/23352—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the direction of introduction of the gas relative to the stirrer the gas moving perpendicular to the axis of rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2336—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer
    • B01F23/23364—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer the gas being introduced between the stirrer elements
    • B01F23/233641—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer the gas being introduced between the stirrer elements at the stirrer axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/93—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with rotary discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23314—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2336—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer
    • B01F23/23364—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer the gas being introduced between the stirrer elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/115—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis
    • B01F27/1155—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis with interconnected discs, forming open frameworks or cages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements

Definitions

  • the General Signal Corp patent is indicative of the general state of the art of impellor based mixers and aerators.
  • FIG 8 shows a side cross-section view of the fourth embodiment
  • FIG 9 shows one embodiment of the central disk
  • FIG 10 is a sketch of a fifth embodiment of a mixing apparatus
  • FIG 1 1 is a sketch of a sixth embodiment of a mixing apparatus.
  • the mixing plates 4 are evenly spaced on the rods by spacers 4a (such as shown in FIG 4) placed on the rods.
  • the spacers are all the same size so that the mixing plates are evenly spaced. Even spacing is not essential to the operation of the invention. The inventor envisages that in certain applications there may be advantage in progressively increasing or decreasing the spacing between the plates.
  • Each mixing plate 4 has a central hole 6. The diameter of the hole 6 in each plate 4 is different.
  • the plates 4 are arranged so that the holes 6 are arranged to form an upper cone closed at the central disc and open towards the top plate.
  • the angle of the upper cone relative to the central axis of the shaft 3 may be in the range 20 degrees to 80 degrees but the inventor has found that an angle of 30 degrees is most suitable.
  • the flow of air in the fourth embodiment is depicted in FIG 8.
  • the inventor envisages that the fourth embodiment could find particular application where deep aeration is required, such as in a lake or other water storage. If the mixing apparatus is positioned deep in the lake to achieve deep mixing it would not be possible for air to be drawn into the upper vortex so air would be drawn down through the hollow shaft instead.
  • One suitable structure for the central disc 22 of the fourth embodiment is shown in FIG 9.
  • the central disc 22 is made from three separate components.
  • a middle plate 24 is threaded to the shaft 20 and has channels 21 formed therein.
  • An upper plate 25 is clamped to the middle plate 24 to form a connection between the shaft and the central disc that disperses the stress associated with the initial start up of the mixing apparatus.
PCT/AU1998/000653 1997-08-20 1998-08-19 Improved mixing and aerating apparatus WO1999008780A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
NZ503016A NZ503016A (en) 1997-08-20 1998-08-19 Mixing and aerating apparatus with rotating discs forming truncated conical space
US09/486,028 US6280078B1 (en) 1997-08-20 1998-08-19 Double sided Mixing and aerating apparatus
AU87214/98A AU726926B2 (en) 1997-08-20 1998-08-19 Improved mixing and aerating apparatus
CA002300909A CA2300909C (en) 1997-08-20 1998-08-19 Improved mixing and aerating apparatus
KR1020007001753A KR100566553B1 (ko) 1997-08-20 1998-08-19 개선된 혼합 및 폭기 장치
EP98938531A EP1015102B1 (en) 1997-08-20 1998-08-19 Improved mixing and aerating apparatus
IL13463698A IL134636A (en) 1997-08-20 1998-08-19 Double sided mixing and aerating apparatus
JP2000509512A JP2001514957A (ja) 1997-08-20 1998-08-19 改良された混合及び曝気装置
DE69830064T DE69830064T2 (de) 1997-08-20 1998-08-19 Verbesserte Misch- und Belüftungsvorrichtung
AT98938531T ATE294633T1 (de) 1997-08-20 1998-08-19 Misch- und belüftungsgerät

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPO8817 1997-08-20
AUPO8817A AUPO881797A0 (en) 1997-08-20 1997-08-20 The twin vortex aerator and safety mixer

Publications (1)

Publication Number Publication Date
WO1999008780A1 true WO1999008780A1 (en) 1999-02-25

Family

ID=3803103

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1998/000653 WO1999008780A1 (en) 1997-08-20 1998-08-19 Improved mixing and aerating apparatus

Country Status (13)

Country Link
US (1) US6280078B1 (ko)
EP (1) EP1015102B1 (ko)
JP (1) JP2001514957A (ko)
KR (1) KR100566553B1 (ko)
CN (1) CN1089267C (ko)
AT (1) ATE294633T1 (ko)
AU (2) AUPO881797A0 (ko)
CA (1) CA2300909C (ko)
DE (1) DE69830064T2 (ko)
ES (1) ES2241156T3 (ko)
IL (1) IL134636A (ko)
NZ (1) NZ503016A (ko)
WO (1) WO1999008780A1 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001034286A2 (en) * 1999-11-10 2001-05-17 Max Gurth Rotary disc mixing apparatus
WO2004069395A1 (fr) * 2003-02-10 2004-08-19 Kurt Hirschi Dispositif pour la production de mini-bulles dans un liquide

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2834652B1 (fr) * 2002-01-11 2004-02-27 Atofina Dispositif d'agitation en particulier pour la dispersion ou l'emulsification de deux liquides non miscibles
US6857774B2 (en) 2002-08-02 2005-02-22 Five Star Technologies, Inc. Devices for cavitational mixing and pumping and methods of using same
US20040085856A1 (en) * 2002-10-30 2004-05-06 Murosako James K. Mixer
DE102004039960A1 (de) 2004-08-18 2006-02-23 Bayer Materialscience Ag Rührvorrichtung und Verfahren zur Durchführung einer Gas-Flüssig-Reaktion
JP5532015B2 (ja) * 2011-05-23 2014-06-25 住友金属鉱山株式会社 排水処理装置
KR101342688B1 (ko) 2012-08-07 2013-12-20 주식회사 대양분산기 플라스틱 저압분산기용 디스크
US20160113250A1 (en) * 2013-06-06 2016-04-28 Once Innovations, Inc. Aerator for enhancing aquatic life by creation of magnetic water
WO2015015416A1 (en) * 2013-08-02 2015-02-05 Services de Forage Orbit Garant Inc. Mixer head and mixer including same
US20150209741A1 (en) * 2014-01-27 2015-07-30 ProMinent Fluid Controls, Inc. Polymer Mixer
US9554562B2 (en) 2014-08-07 2017-01-31 Once Innovations, Inc. Lighting system and control for experimenting in aquaculture
US9937472B2 (en) 2015-05-07 2018-04-10 Techmetals, Inc. Assembly operable to mix or sparge a liquid
US11044895B2 (en) 2016-05-11 2021-06-29 Signify North America Corporation System and method for promoting survival rate in larvae
US11123697B2 (en) * 2019-02-15 2021-09-21 Rory Hiltbrand Rotary compression mixer
CN113149173A (zh) * 2021-03-15 2021-07-23 吕大明 富氢水饱和溶氢装置

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52115778A (en) * 1976-03-26 1977-09-28 Tatsuya Arai Gassliquid contact reaction apparatus combined with aspirator
EP0006597A1 (de) * 1978-07-01 1980-01-09 Rheintechnik Weiland & Kaspar KG Maschinenfabrik. Verfahren und Vorrichtung zur Belüftung von Wasser
SU860847A1 (ru) * 1979-02-06 1981-09-07 Латвийское Отделение Центрального Научно-Исследовательского Института Морского Флота Смеситель-диспергатор
GB2113562A (en) * 1981-11-24 1983-08-10 Ici Plc Treatment process
GB2143443A (en) * 1983-07-16 1985-02-13 Lechler Gmbh & Co Kg Cylindrical inserts for two-substance spray nozzles and nozzles incorporating such inserts
EP0256965A2 (en) * 1986-08-20 1988-02-24 Beloit Corporation Method of and means for hydrodynamic mixing
SU1572689A1 (ru) * 1988-04-18 1990-06-23 Всероссийский научно-исследовательский и проектно-технологический институт механизации и электрификации сельского хозяйства Устройство дл приготовлени суспензий
EP0434124A1 (en) * 1989-12-15 1991-06-26 Shell Internationale Researchmaatschappij B.V. Multistage reactor
US5085810A (en) * 1990-08-03 1992-02-04 Ebtech, Inc. Water carbonator system
WO1994026402A1 (en) * 1993-05-08 1994-11-24 Explosive Developments Limited Mixing arrangements
WO1997030292A1 (en) * 1996-02-15 1997-08-21 Oleg Vyacheslavovich Kozyuk Method and device for obtaining a free disperse system in liquid

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB622590A (en) * 1946-04-08 1949-05-04 Ernest Jean Georges Huybreghs Improvements in mixing or agitating apparatus
US2609189A (en) * 1949-04-26 1952-09-02 Combined Metals Reduction Comp Machine for conditioning liquids with gases
US2626135A (en) * 1951-04-20 1953-01-20 Serner Herbert Edward Mixing device
US3273865A (en) * 1964-06-23 1966-09-20 American Radiator & Standard Aerator
US3486741A (en) * 1968-02-06 1969-12-30 Ernst L Midgette Impeller
NO142830C (no) * 1978-02-28 1980-10-29 Trondhjems Mek Verksted As Anordning for fordeling av en gass i et vaeskemedium
US4773819A (en) * 1978-08-30 1988-09-27 Gurth Max Ira Rotary disc slurry pump
JPS59127636A (ja) * 1983-01-12 1984-07-23 Hitachi Maxell Ltd 混合装置
US4451155A (en) * 1983-01-20 1984-05-29 A. R. Wilfley And Sons, Inc. Mixing device
US4534654A (en) * 1983-07-27 1985-08-13 A. J. Sackett & Sons Co. High-speed fluid blender
EP0474929A1 (en) * 1990-09-11 1992-03-18 International Business Machines Corporation Laminar flow fans
DE9106768U1 (ko) * 1991-06-03 1991-07-25 Stelzer Ruehrtechnik Gmbh, 3530 Warburg, De
US5226727A (en) * 1991-09-30 1993-07-13 Reichner Thomas W Agitator/mixer
JPH0647072B2 (ja) * 1991-12-11 1994-06-22 株式会社テラルキョクトウ 高粘性液体用ミキサー
DE19735000C2 (de) * 1997-08-13 1999-10-21 Niemann Wilhelm Gmbh Co Kg Dispergierwerkzeug zum allseitigen Benetzen von Primärteilchen pulveriger Stoffe

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52115778A (en) * 1976-03-26 1977-09-28 Tatsuya Arai Gassliquid contact reaction apparatus combined with aspirator
EP0006597A1 (de) * 1978-07-01 1980-01-09 Rheintechnik Weiland & Kaspar KG Maschinenfabrik. Verfahren und Vorrichtung zur Belüftung von Wasser
SU860847A1 (ru) * 1979-02-06 1981-09-07 Латвийское Отделение Центрального Научно-Исследовательского Института Морского Флота Смеситель-диспергатор
GB2113562A (en) * 1981-11-24 1983-08-10 Ici Plc Treatment process
GB2143443A (en) * 1983-07-16 1985-02-13 Lechler Gmbh & Co Kg Cylindrical inserts for two-substance spray nozzles and nozzles incorporating such inserts
EP0256965A2 (en) * 1986-08-20 1988-02-24 Beloit Corporation Method of and means for hydrodynamic mixing
SU1572689A1 (ru) * 1988-04-18 1990-06-23 Всероссийский научно-исследовательский и проектно-технологический институт механизации и электрификации сельского хозяйства Устройство дл приготовлени суспензий
EP0434124A1 (en) * 1989-12-15 1991-06-26 Shell Internationale Researchmaatschappij B.V. Multistage reactor
US5085810A (en) * 1990-08-03 1992-02-04 Ebtech, Inc. Water carbonator system
WO1994026402A1 (en) * 1993-05-08 1994-11-24 Explosive Developments Limited Mixing arrangements
WO1997030292A1 (en) * 1996-02-15 1997-08-21 Oleg Vyacheslavovich Kozyuk Method and device for obtaining a free disperse system in liquid

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 7745, Derwent World Patents Index; Class D15, AN 1977-80227Y, XP002940784 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001034286A2 (en) * 1999-11-10 2001-05-17 Max Gurth Rotary disc mixing apparatus
WO2001034286A3 (en) * 1999-11-10 2001-12-06 Max Gurth Rotary disc mixing apparatus
WO2004069395A1 (fr) * 2003-02-10 2004-08-19 Kurt Hirschi Dispositif pour la production de mini-bulles dans un liquide

Also Published As

Publication number Publication date
IL134636A (en) 2003-05-29
AUPO881797A0 (en) 1997-09-18
DE69830064T2 (de) 2006-01-12
CN1267231A (zh) 2000-09-20
KR100566553B1 (ko) 2006-03-30
ATE294633T1 (de) 2005-05-15
EP1015102A1 (en) 2000-07-05
AU8721498A (en) 1999-03-08
DE69830064D1 (de) 2005-06-09
IL134636A0 (en) 2001-04-30
JP2001514957A (ja) 2001-09-18
EP1015102B1 (en) 2005-05-04
CA2300909A1 (en) 1999-02-25
AU726926B2 (en) 2000-11-23
NZ503016A (en) 2000-06-23
EP1015102A4 (en) 2001-02-21
ES2241156T3 (es) 2005-10-16
US6280078B1 (en) 2001-08-28
CA2300909C (en) 2005-11-22
KR20010015571A (ko) 2001-02-26
CN1089267C (zh) 2002-08-21

Similar Documents

Publication Publication Date Title
AU726926B2 (en) Improved mixing and aerating apparatus
CA1124415A (en) Fluids mixing apparatus
US4290885A (en) Aeration device
JP3651806B2 (ja) 液体を攪拌して曝気し、その液体を処理するタンク内の泡を除去する装置
EP0853594B1 (en) Submersible mixing impeller
JPS5922633A (ja) ガスと液体を混合するための方法および装置
US5925293A (en) Mixer sparging apparatus
US4007920A (en) Mixing and aerating device
CA2416461C (en) Mixing apparatus and method for mixing gas in a closed reactor
GB1567452A (en) Rotating gas duffusers
GB2045632A (en) Aerating
EP0027911B1 (en) Apparatus for contacting liquid with a gas
US4374030A (en) Method for separating a dispersed phase from a continuous phase
US20090213684A1 (en) Apparatus for distribution of a gas into a body of liquid
JPS6215249B2 (ko)
US4336144A (en) Method for mixing gases with liquids
CA2663861C (en) Apparatus for distribution of a gas into a body of liquid
US5149195A (en) Agitator
JP3203336B2 (ja) 水中撹拌装置
JPH0833896A (ja) 攪拌曝気装置における軸流インペラ
RU2135272C1 (ru) Аппарат-смеситель с мешалкой для обработки жидкофазных сред
JP3103823B2 (ja) 気液混合装置
JP2006043668A (ja) 流体撹拌装置、それに用いるタービン型撹拌機及び邪魔板
SU1143697A1 (ru) Поверхностный аэратор
RU2147295C1 (ru) Устройство для аэрации жидкостей

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 134636

Country of ref document: IL

Ref document number: 98808283.7

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM HR HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
ENP Entry into the national phase

Ref document number: 2300909

Country of ref document: CA

Ref document number: 2300909

Country of ref document: CA

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 09486028

Country of ref document: US

Ref document number: 1200000134

Country of ref document: VN

WWE Wipo information: entry into national phase

Ref document number: 1020007001753

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 87214/98

Country of ref document: AU

WWE Wipo information: entry into national phase

Ref document number: 503016

Country of ref document: NZ

WWE Wipo information: entry into national phase

Ref document number: 1998938531

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 1998938531

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1020007001753

Country of ref document: KR

WWG Wipo information: grant in national office

Ref document number: 87214/98

Country of ref document: AU

WWG Wipo information: grant in national office

Ref document number: 1998938531

Country of ref document: EP

WWR Wipo information: refused in national office

Ref document number: 1020007001753

Country of ref document: KR